Weather Unit Study Guide When water vapor rises higher and higher into the sky it cools and may form clouds. At the beach after you have been swimming, water evaporates into the air drying your swimming suit. If you are making observations of the size of a puddle on the ground over time on a hot day you would expect the puddle to get smaller. On a sunny hot day water will evaporate, turning into a gas. Solar energy is the energy used to convert the liquid puddle to gas. The uneven heating and cooling rates of soil and water are what create wind. The sun warms the land and the water in the water cycle. For a puddle to evaporate the temperature needs to be warm, the humidity low often with no clouds in the sky. A bar graph comparing temperature to latitude would help you understand the relationship between latitude and temperature in various cities in the world. Scientists use changes in air pressure, which is changes in the weight of air, to predict rain. The sun warms soil more quickly than water. That is why the beach sand can be hot and the water still feels cool. The sun is responsible for the weather on earth. When a water droplet inside a cloud becomes too big for the cloud to hold precipitation occurs (It rains or snows). When trying to identify types of clouds it is important to notice how high in the sky the clouds are located as well as the shape of the clouds. Meteorologists study weather. They are the experts that inform us of upcoming weather events and give interesting information on weather. A large lake near a city could affect the daily average temperature by making the area warmer in the winter. This is because water stays warmer longer than soil and will help keep the temperature warmer. When climbing up a mountain, the higher you climb the cooler the temperature becomes. Hawaii is warm every day of the year because of the tropical latitude. Warm air touching a can of cold soda causes condensation which leaves water droplets on the outside of the can. When determining the average daily temperature for an area. You collect data for several days. Then you add the numbers together and divide by the number of days you collected the data. Clouds form when moist air meets cooler clouds. Temperature will likely drop if there is rain/cloud cover and the winds increase. Thinner air holds less heat, so expect colder temperatures at the top of a high mountain. Cumulus clouds usually signal fair weather, but can turn into thunderclouds. When a high pressure system follows rain you would expect the sky to clear and have sunshine.